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Reason: Needs lots of updates and some clean up. Descriptions can be expanded to add context. Remove calendars, double check dates for episodes. Character deaths should be added. Big events from episodes can be added other than just when the episode takes place. Terms such as "we" should not go in the description of what happens on a date. Many dates for episodes need ranges for how many days the episode took place. Not just one day (either start or end day). Add events mentioned/seen in Grimm diaries, Rosalee's books, etc. History of the keys (being hidden/found)
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This is a timeline of events that have occurred on the show or historical events that occurred in the past. Some events are based on real life things and the dates may not match up with the real life dates of certain events.

Before the series begins.
2184 BC The death grip is first documented by Egyptian Wesen under the reign of Merenre Nemtyemsaf II in the sixth dynasty.
1202-1204 The Fourth Crusade takes place.
1285 The Wesen Wars occur.
1521 Council of Walenstadt is formed; Gesetzbuch Ehrenkodex is written.
1682 Royals, Grimms, and Wesen meet for the first time and write the Charter of Wittenberg.
1812 Jacob and Wilhelm Grimm first publish Grimms' Fairy Tales.
September 15, 1833 Robert McCormick visits the Galapagos Islands and slaughters the Genio Innocuo.
1895 A Grimm in Germany documents an encounter with a Ziegevolk while visiting Kitzbühel Alps, south of Rattenberg, Austria.
1931 Walter Kessler is born.
1958 Marie Kessler is born.
1960 Kelly Burkhardt is born.
October 21, 1970 Sean Renard is born.
June 18, 1982 Nick Burkhardt is born.
April 14, 1985 Adalind Schade is born.
April 29, 1993 Theresa Rubel is born.
March 24, 1994 Four Schakals murder Reed Burkhardt and Gina Serafini in a motor collision in Rhinebeck, New York, though they intended to kill Kelly Burkhardt instead of Gina.
2006 Juliette begins working at the Roseway Veterinary Hospital.
2009 Juliette moves in with Nick.
January 2010 Soledad Marquesa begins his hunt for the Coins of Zakynthos.
Events of the series.
September 10, 2011 "Pilot" begins during the school year.
September 12, 2011 Full moon. "Pilot" ends and "Bears Will Be Bears" begins.
September 13-22, 2011 Marie is buried on an unknown date, ending "Bears Will Be Bears".

"Beeware" and "Lonelyhearts" happen. "Beeware" spans two full days (morning to evening). "Lonelyhearts" spans three days (evening to daylight).

September 22-26, 2011 "Danse Macabre" spans five days (evening to evening), and the November 11th date is shown on a cell phone. Interestingly, however, September 22nd shows on Sarah's phone. Based on Wu's comment the following morning that the concert is scheduled for "Saturday" rather than "today," the November date is incorrect. Nick meets Bud. Renard gets Adalind to seduce Hank for the first time. The September 26th date is shown on a cell phone on the final evening.
October 11-13, 2011 "The Three Bad Wolves". Date given away by a full moon on October 12th.
December 8-11, 2011 "Let Your Hair Down" occurs before Christmas, as indicated by Monroe's decorating. Monroe celebrates Thanksgiving, so this must be in December. The moon is full on the third night, which is December 10th. Bud and his friends spy on Nick's home on December 9th.
January-February, 2012 "Game Ogre" spans three days (night to morning). "Of Mouse and Man" spans three (night to night). "Organ Grinder" spans four days (night to night). Lack of Christmas decoration in Monroe's home indicates it's no longer December.
February 10-13, 2012 "Tarantella" takes place. The date is shown on a security camera film.
Mid-February 2012 "Last Grimm Standing" spans three days (night to night). Nick and Juliette celebrate their 3 year anniversary on the third evening.
Late February 2012 The Dragon's Tongue stirs up trouble in Berlin.
March 10-12, 2012 "Three Coins in a Fuchsbau" spans three days (night to night). Nick tells Farley Kolt it has been "about four months" since Aunt Marie's passing.
Between March 12 and July 2012 Akira Kimura wastes three days with Farley Kolt in Los Angeles.

"Plumed Serpent" spans three days (night to night).

"Island of Dreams" spans three days (night to night).

"The Thing with Feathers" spans two days (Friday afternoon to Saturday night).

"Love Sick" spans at least three days (daylight to night).

"Cat and Mouse" spans three days (night to night).

"Leave It to Beavers", "Happily Ever Aftermath", and "Big Feet" also happen during this time period.

Mid-July 2012 "Bad Teeth" begins, showing a ship parting from Port Havre on which a Mauvais Dentes stowed away to Portland.
Late July 2012 "Woman in Black" begins. On the final of these three evenings, a massacre occurs on the ship, and Kimura is apprehended.

"Bad Teeth" continues from a few minutes prior to the end of "Woman in Black". In all, "Bad Teeth" spans 11 nonconsecutive days. Without the short scene at the beginning, the rest spans two days (late night to early evening).

"The Kiss" begins where "Bad Teeth" left off and spans two days (early evening to late evening).

August 1, 2012 "Bad Moon Rising" ends. Nick's dialogue with Juliette sets the date shy of a year after "Pilot", and the full moon plot element sets the date with precision.
October 31, 2012 "La Llorona" finishes on Halloween, as evidenced by all the children trick-or-treating.
March 23-24, 2013 In "Nameless", the date in the solution to the Sudoku puzzle is March 12th at 7:15 PM, so it's after this date that the deaths occurred. Jenna Marshall acts like this was some time ago, since she can't recall the details when confronted with the puzzle. Renard's Confidant says that he is supposed to be in Venice for the weekend, so the last two weekends in March are 23-24 & 30-31. The episode ends after two nights.
March 25-27, 2013 The flashback reads "6 months ago" as "One Angry Fuchsbau" starts. Cut to "Today", which picks up the morning after "Nameless" ends; with Nick discussing last night's conversation with Monroe about Juliette wanting to see the trailer. The episode spans 3 full days.
April 19, 2013 "Volcanalis" starts. The date from the video Jill Prembrey made at Mount Hood sets the date.
May 2-7, 2013 "Kiss of the Muse" takes place. The dates come from events in "The Waking Dead". The Portland Farmers Market at Shemanski Park is only open on Wednesdays, which the first date in May 2013 is May 1st.

"The Waking Dead" is from the same night of "Kiss of the Muse", with Nick and Juliette in front of their house after leaving the precinct. That morning, Hank pulls up Richard Mulpus' death certificate with the May 7th date. Hank says that was three days ago (May 4th).

December 21-22, 2013 "Twelve Days of Krampus" takes place as Nick, Hank, Monroe, and Bud search for the missing teens before Krampus eats them and ends as Krampus' human form is taken to the precinct for interrogation.
January 15-17, 2014 In "The Good Soldier", the day after the first murder, Hank pulls up a police report from Phoenix on the death of Robert Hammond with a date of January 16th.
March 19, 2014 "The Show Must Go On" begins as the date was on the ticket stubs of the murdered women.
February 18, 2015 "Hibernaculum" ends as the date was on Wu's tablet at the scene of the Cabbie's body.
January 28-30, 2016 "A Reptile Dysfunction" takes place over these dates, as the security cameras in Hadrian's Wall's compound have time and date stamps.
Februar 3-5, 2016 "Star-Crossed" begins on February 3 and ends on February 5 as seen on the flier for the Black Claw meeting.
February 9-16, 2016 "Map of the Seven Knights" begins on February 9 and ends on February 12, as the German newspaper with Andrea Stroh's murder as the front page story was dated February 11, and Felix Dietrich's shipping order indicated that Josef Nebojsa's former trunk was to be shipped on February 12.

"Key Move" begins on February 12 and ends on February 14.

"Into the Schwarzwald" begins on February 14 and ends on February 15.

"Silence of the Slams" begins on February 15 and ends on February 16.

March 22-25, 2016 "Lycanthropia" initially begins on March 22, two days before Doyle Baske crashes his car on his way to his mother's house on the first night of the full moon. These dates are indicated by the date and day, Friday, March 25, appearing on Renard's cell phone the day after Doyle crashes his car. The episode ends on March 25.
April 14-15, 2016 "Inugami" begins on April 14 and ends on April 15, as indicated by the date on Nick's phone when he got a text message from Monroe.
May 15-21, 2016 "Good to the Bone" begins on the night of May 15 and ends on the night of May 17. "The Taming of the Wu" picks up from there and ends on the night of May 18. "Bad Night" then picks up from there and ends on the night of May 19, which is where "Set Up" begins (the episode ends either just before the start of May 21 or just after), and "The Beginning of the End" ultimately ends during the early hours of May 21. This is indicated by the date Wu looks up at the precinct, May 19, 2016, when trying to find Hank's booking records that would have been made by Boyd Baribeau and Kate Masters on the night they took him into their custody.
May 21, 2016 "Fugitive" begins seconds after "The Beginning of the End" and ends hours later in the daytime. "Trust Me Knot" picks up seconds after "Fugitive" ends hours later while it is still light outside.
May 21-22, 2016 "Oh Captain, My Captain" begins the night of May 21 and ends the night of May 22.


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